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丹麥GRAS麥克風(fēng)44AB成都銷(xiāo)售中心
最近更新時(shí)間:2018-12-12
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丹麥GRAS麥克風(fēng)44AB成都銷(xiāo)售中心
GRAS麥克風(fēng) GRAS放大器 GRAS前置器 GRAS* GRAS總經(jīng)銷(xiāo)
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GRAS 46AC
GRAS 46AF GRAS 46AR
46AR is a 1/2” high sensitivity random incidence
microphone set optimized to measure sound correctly in
random, diffuse and reverberant sound fields; with built-in
TEDS and 7-pin LEMO connector.
1/2” LEMO Random incidence Standard
Microphone Set
46AF is a 1/2” general purpose high sensitivity free-field
microphone set with built-in TEDS and 7-pin LEMO
connector.
1/2” LEMO Free-field Standard Microphone Set
46AC is a high-performance 1/2” free-field standard
microphone set for measuring medium sound pressure
levels at high frequencies; with built-in TEDS and 7-pin
LEMO connector.
1/2” LEMO Free-field Standard Microphone Set,
Wide Frequency
* ±3 dB. All other ±2 dB.
Nominal
Sensitivity
Frequency
Response
Power
Supply
Dynamic Range Temperature
Range
Length Diameter without
Protection Grid
Diameter with
Protection Grid
Weight
46AC 12.5 3.15 - 40 k 28 - 120 20 dB(A) to 164 dB -30 to +70 97 12.7 13.2 42
46AF 50 3.15 - 20 k 28 - 120 17 dB(A) to 149 dB -30 to +70 101 12.7 13.2 42
46AR 50 3.15 - 16 k* 28 - 120 19 dB(A) to 149 dB -30 to +70 101 12.7 13.2 42
46BF-1 3.6 4 - 100 k 28 - 120 35 dB(A) to 172 dB -30 to +70 69 6.35 6.9 10
Units mV/Pa Hz V DC re. 20 µPa °C mm mm mm g
GRAS 46BF-1
46BF-1 is a 1/4” high frequency free-field microphone
set for high level measurements with built-in TEDS and a
5-pin LEMO connector.
To be used with AA0091 or AA0092-CL 5-pin to 7-pin
LEMO cable.
GRAS 40AE 1/2“預(yù)極化自由場(chǎng)麥克風(fēng)
頻率范圍:3.15 Hz至20 kHz
Dyn范圍:15 dB(A)至148 dB
靈敏度:50 mV / Pa
具有恒定電流功率的麥克風(fēng)(CCP)
恒流電源(CCP)麥克風(fēng)套件使用高質(zhì)量的同軸電纜。有些套裝包含3米長(zhǎng)的電纜,其他則有電纜作為附件。應(yīng)該注意的是,較長(zhǎng)的電纜會(huì)影響較高的頻率和動(dòng)態(tài)范圍。
所有GRAS麥克風(fēng)套件均作為一個(gè)單元交付,并進(jìn)行相應(yīng)校準(zhǔn)。這些套件隨校準(zhǔn)圖表一起提供,包括整套的靈敏度值和頻率響應(yīng)曲線(xiàn)。因此,靈敏度值可以直接用于系統(tǒng)設(shè)置。除CCP變體外,GRAS麥克風(fēng)套件還提供7針LEMO輸入。
為了頻繁驗(yàn)證測(cè)量鏈,需要聲源。GRAS為此提供了一系列活塞式電話(huà)和聲音校準(zhǔn)器。根據(jù)用途(現(xiàn)場(chǎng)或?qū)嶒?yàn)室)和內(nèi)部質(zhì)量控制要求,我們建議至少每隔一年重新校準(zhǔn)一次。請(qǐng)聯(lián)系您的GRAS合作伙伴,獲取工廠(chǎng)和認(rèn)可的校準(zhǔn)選項(xiàng)。
測(cè)量麥克風(fēng)套裝
測(cè)量麥克風(fēng)套件已經(jīng)組合在一起,因此可以滿(mǎn)足用戶(hù)的典型測(cè)量需求。獨(dú)立于您的測(cè)量系統(tǒng)和應(yīng)用程序,您應(yīng)該能夠找到適合您需求的裝置。麥克風(fēng)套件可以直接連接到所有專(zhuān)業(yè)測(cè)量系統(tǒng),如圖所示,它們可用于CCP和7針LEMO輸入。
如果您的測(cè)量平臺(tái)支持符合IEEE1451.4(TEDS)的智能傳感器,您只需插入麥克風(fēng)即可識(shí)別自己的特定屬性,類(lèi)型和校準(zhǔn)數(shù)據(jù)。多渠道用戶(hù)特別欣賞的功能。
CCP設(shè)備使用高質(zhì)量的同軸電纜,而LEMO設(shè)備使用特殊的柔軟型多芯屏蔽電纜。如果要使用延長(zhǎng)電纜,則應(yīng)考慮對(duì)較高頻率和動(dòng)態(tài)范圍的可能影響。
所有麥克風(fēng)套件均作為一個(gè)單元交付,并進(jìn)行相應(yīng)校準(zhǔn)。這些套件隨校準(zhǔn)圖表一起提供,包括整套的靈敏度值和頻率響應(yīng)曲線(xiàn)。因此,靈敏度值可以直接用于系統(tǒng)設(shè)置。
為了頻繁驗(yàn)證測(cè)量鏈,將需要聲源。GRAS為此提供114dB聲音校準(zhǔn)器。根據(jù)用途和內(nèi)部質(zhì)量控制要求,我們建議至少每隔一年重新校準(zhǔn)一次。為了更準(zhǔn)確的驗(yàn)證,我們建議使用活塞式電話(huà)進(jìn)行校準(zhǔn)。GRAS提供114dB和134dB活塞式電話(huà)。此外,我們建議根據(jù)極其可靠的參考來(lái)校準(zhǔn)聲源。GRAS提供校準(zhǔn)服務(wù),并建議每?jī)赡赀M(jìn)行一次校準(zhǔn)。
質(zhì)量和保修
所有GRAS麥克風(fēng)均采用材料制成,確保終身穩(wěn)定性和堅(jiān)固性。麥克風(fēng)全部由經(jīng)過(guò)驗(yàn)證的潔凈室環(huán)境組裝,由熟練的專(zhuān)業(yè)操作員組成,并在該領(lǐng)域擁有多年的專(zhuān)業(yè)知識(shí)。
麥克風(fēng)振膜,機(jī)身和改進(jìn)的保護(hù)網(wǎng)格由不銹鋼制成,這使得麥克風(fēng)可以抵抗物理?yè)p壞,以及腐蝕性空氣或氣體造成的腐蝕。
這與加強(qiáng)的鍍金麥克風(fēng)端子相結(jié)合,確保了高度可靠的連接,使GRAS能夠?qū)τ腥毕莸牟牧虾凸に囂峁?年保修。
服務(wù)
如果您不小心損壞了GRAS麥克風(fēng)上的振膜,我們可以 - 在大多數(shù)情況下 - 以非常合理的成本和短的周轉(zhuǎn)時(shí)間進(jìn)行更換。這不僅可以保護(hù)您的投資,還可以使您的質(zhì)量保證部門(mén)滿(mǎn)意,因?yàn)槟槐負(fù)?dān)心新的序列號(hào)等。
Technology
Introduction
GRAS 40AE is a high-precision electret condenser microphone made according to IEC 61094-4 requirements. The electret technology for microphones was introduced in the beginning of the 1960’s and has been continuously improved over the years. At GRAS, we have developed and refined our own techniques. This guarantees that our prepolarized microphones are as stable and robust as our traditional, externally polarized versions in daily use scenarios.
The 40AE’s design is based on the original reference ?” pressure microphone, but optimized for free-field measurements with a 12 dB increase of the sensitivity. The result is a nominal sensitivity of 50 mV/Pa, slightly longer microphone housing, and a natural reduced dynamic range.
40AE is the perfect free-field complement to the GRAS 40AD ?” Ext. Polarized Pressure Microphone.
40AE is individually factory-calibrated and delivered with a calibration chart stating its specific open-circuit sensitivity, pressure, and corrected free-field frequency responses.
Typical applications and use
The properties and robust design make 40AE the natural choice for an all-round free-field, high sensitive microphone suitable for both field-work and laboratory measurements.
The high sensitivity and reliability has made 40AE the preferred measurement microphone for sound level meters/analyzers with CCP-option and, as such, enables IEC 61672 Class 1 measurements.
Compatibility
The 40AE requires a standardized ?” or ?” CCP preamplifier and an input module that supports this technology with a BNC, SMB, or Microdot connector.
System verification
For daily verification and check of your measurement setup, we recommend using a calibrator like GRAS 42AG.
For proper sensitivity calibration, we recommend using a pistonphone like GRAS 42AP Intelligent Pistonphone.
Calibration
When leaving the factory, all GRAS microphones have been calibrated in a controlled laboratory environment using traceable calibration equipment. Depending on the use, measurement environment and internal quality control programs we recommend that the microphone is recalibrated at least once a year.
We offer two kinds of calibration as an optional after-sales service: GRAS Traceable Calibration and GRAS Accredited Calibration.
GRAS Traceable Calibration is a traceable calibration performed by trained personnel under controlled conditions according to established procedures and standards. This is identical to the rigorous calibration that all GRAS microphones are subjected to as an integral part of our quality assurance.
GRAS Accredited Calibration is performed by the GRAS Accredited Calibration Laboratory that has been accredited in accordance with ISO 17025 by DANAK, the Danish Accreditation Fund.
If you want a new microphone set delivered with an accredited calibration in stead of the default factory calibration, specify this when ordering.
Learn more at gras/calib.
Quality and warranty
All GRAS microphones are made of high-quality materials that will ensure life-long stability and robustness. The microphones are all assembled in verified clean-room environments by skilled and dedicated operators with many years of expertise in this field.
The microphone diaphragm, body, and improved protection grid are made of high-grade stainless steel, which makes the microphone resistant to physical damage, as well as corrosion caused by aggressive air or gasses.
This, combined with the reinforced gold-plated microphone terminal which guarantees a highly reliable connection, enables GRAS to offer 5 years warranty against defective materials and workmanship.
Service
If you accidentally damage the diaphragm on a GRAS microphone, we can - in most cases - replace it at a very reasonable cost and with a short turn-around time. This not only protects your investment, but also pleases your quality assurance department because you don’t have to worry about new serial numbers, etc.
選擇麥克風(fēng)套裝或從麥克風(fēng)指南獲取指導(dǎo)。
測(cè)量麥克風(fēng)盒
GRAS測(cè)量麥克風(fēng)有多種類(lèi)型,涵蓋各種頻率范圍,動(dòng)態(tài)范圍和適合不同的應(yīng)用場(chǎng)合。
要選擇適合您特定測(cè)量需求的麥克風(fēng),您的考慮因素很可能概括為:
? 預(yù)極化與外部偏光
?自由場(chǎng),壓力或隨機(jī)發(fā)生
?動(dòng)態(tài)范圍和頻率范圍
有關(guān)選擇正確麥克風(fēng)的詳細(xì)信息,請(qǐng)參閱我們的麥克風(fēng)指南
技術(shù)
介紹
GRAS 40AE是根據(jù)IEC 61094-4要求制造的高精度駐極體電容式麥克風(fēng)。用于麥克風(fēng)的駐極體技術(shù)是在20世紀(jì)60年代初引入的,并且多年來(lái)一直在不斷改進(jìn)。在GRAS,我們開(kāi)發(fā)并完善了自己的技術(shù)。這保證了我們的預(yù)極化麥克風(fēng)在日常使用場(chǎng)景中與我們傳統(tǒng)的外部極化版本一樣穩(wěn)定和堅(jiān)固。
40AE的設(shè)計(jì)基于原始參考?“壓力麥克風(fēng),但針對(duì)自由場(chǎng)測(cè)量進(jìn)行了優(yōu)化,靈敏度提高了12 dB。結(jié)果是標(biāo)稱(chēng)靈敏度為50 mV / Pa,麥克風(fēng)外殼略長(zhǎng),動(dòng)態(tài)范圍自然降低。
40AE是GRAS40AD? “Ext。的自由場(chǎng)補(bǔ)充。偏光壓力麥克風(fēng)。
40AE經(jīng)過(guò)單獨(dú)的工廠(chǎng)校準(zhǔn),并提供校準(zhǔn)圖表,說(shuō)明其特定的開(kāi)路靈敏度,壓力和校正的自由場(chǎng)頻率響應(yīng)。
典型應(yīng)用和使用
40AE的特性和堅(jiān)固的設(shè)計(jì)使其成為適用于野外工作和實(shí)驗(yàn)室測(cè)量的自由場(chǎng),高靈敏度麥克風(fēng)的自然選擇。
高靈敏度和高可靠性使40AE成為具有CCP選項(xiàng)的聲級(jí)計(jì)/分析儀的選測(cè)量麥克風(fēng),因此可實(shí)現(xiàn)IEC 61672 1級(jí)測(cè)量。
兼容性
40AE需要一個(gè)標(biāo)準(zhǔn)化的?“或?”CCP前置放大器和一個(gè)支持該技術(shù)的輸入模塊,帶有BNC,SMB或Microdot連接器。
系統(tǒng)驗(yàn)證
BELDEN RG213/U
HOLROYD BR703
MENS TGX40-300
MENS 760P25BAANNND6
NASON SM-1C-5R
GC S401AF16V9CF5
SERVO MPM1141-489
SOR 63-18043-MELC
SOR 731A-F7A-B-A5-S3-C1
SOR 6NN-K3-N4-C1A
SOR 4NN-K118-N4-B1A-TTX37
SOR 54NN-K118-N4-B1A
RHEEM EGSP10 277V
DESTACO 213-U
DESTACO 2007-U
對(duì)于每日驗(yàn)證和檢查您的測(cè)量設(shè)置,我們建議使用GRAS 42AG等校準(zhǔn)器。
為了進(jìn)行適當(dāng)?shù)撵`敏度校準(zhǔn),我們建議使用GRAS 42AP智能活塞式電話(huà)等活塞式電話(huà)。
校準(zhǔn)
出廠(chǎng)時(shí),所有GRAS麥克風(fēng)均已在可控實(shí)驗(yàn)室環(huán)境中使用可追溯校準(zhǔn)設(shè)備進(jìn)行校準(zhǔn)。根據(jù)使用情況,測(cè)量環(huán)境和內(nèi)部質(zhì)量控制程序,我們建議每年至少重新校準(zhǔn)一次麥克風(fēng)。
我們提供兩種校準(zhǔn)作為可選的售后服務(wù):GRAS可追溯校準(zhǔn)和GRAS認(rèn)可校準(zhǔn)。
GRAS可追蹤校準(zhǔn)是由受過(guò)訓(xùn)練的人員根據(jù)既定程序和標(biāo)準(zhǔn)在受控條件下執(zhí)行的可追溯校準(zhǔn)。這與所有GRAS麥克風(fēng)作為我們質(zhì)量保證*的一部分的嚴(yán)格校準(zhǔn)相同。
GRAS認(rèn)可校準(zhǔn)由GRAS認(rèn)可校準(zhǔn)實(shí)驗(yàn)室執(zhí)行,該實(shí)驗(yàn)室已通過(guò)丹麥認(rèn)證基金DANAK的ISO 17025認(rèn)證。
如果您想要一個(gè)帶有認(rèn)可校準(zhǔn)的新麥克風(fēng)套件而不是默認(rèn)的出廠(chǎng)校準(zhǔn),請(qǐng)?jiān)谟嗁?gòu)時(shí)。
訂購(gòu)信息
GRAS 46AE 1/2“CCP壓力標(biāo)準(zhǔn)麥克風(fēng)套件。這是”標(biāo)準(zhǔn)“后通風(fēng)型。
GRAS 46AE-FV 1/2“CCP壓力標(biāo)準(zhǔn)麥克風(fēng)套件,正面通風(fēng)。與46AE相同,但帶有前通風(fēng)口。
GRAS AA0035 3米BNC - BNC電纜
GRAS AA0039-CL 定制長(zhǎng)度BNC - BNC電纜
GRAS AL0008 1/2“麥克風(fēng)支架,POM
GRAS AL0012 1/2“麥克風(fēng)支架,不銹鋼
GRAS AL0005 旋轉(zhuǎn)頭
GRAS AL0006
GRAS RA0020 1/2“Nosecone
GRAS AM0069 擋風(fēng)玻璃適用于1/2“麥克風(fēng)
GRAS RA0131 1/2''防雨帽
GRAS 12AL 具有A加權(quán)濾波器的1通道CCP功率模塊
GRAS 12AQ 2通道通用電源模塊,帶信號(hào)調(diào)理和PC接口
GRAS 42AG 多功能聲音校準(zhǔn)器,1級(jí)
GRAS 42AP 智能活塞,0級(jí)
GRAS CA0029麥克風(fēng)套件的可追蹤校準(zhǔn)
GRAS CA2301麥克風(fēng)套件的認(rèn)可校準(zhǔn)
Gras 46AE
Gras 46AC
Gras 46AP
Gras 46AR
Gras 46AF
Gras 46BF
Gras 46AG
Gras 46DP
Gras 46AO
Gras 46AQ
Gras 46AM
Gras 46BD
Gras 46DD
Gras 46AN
Gras 46EN
Gras 46EU
Gras 46AU
Gras 46BP
Gras 46BH
Gras 40SC
Gras 46SA
Gras 26AB
Gras 26AN
Gras 46AR
Gras 26AC
Gras 26HG
Gras 26AS
Gras 26CK
Gras 26CB
Gras 26CG
Gras 26CC
Gras 26CS
Gras 41AC
Gras 40HF
Gras 40HH
Gras AL0030
Gras AA0079
Gras 46BL
Gras 46BD
Gras 46BE
Gras OP0040
Gras OP0041
Gras OP0030
Gras OP0031
Gras OP0032
Gras OP0050
Gras OP0051
Gras OP0070
Gras 44AA
Gras 44AB
Gras OP0045
Gras OP0046
Gras 43AH
Gras 43AI
Gras AA0032
Gras AA0033
Gras AA0034
Gras AA0035
Gras AA0070
Gras AA0073-CL
Gras 12AL
Gras 12AX
Gras 42AG
Gras 42AP
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